Skip to content
Skip to content
TopHapOpen in map
Single Family ResidenceResidential
$360,877$214 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 96How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $345,000 on Jun 12, 2025

12840 S MASON AVE

PALOS HEIGHTS, IL 60463
3
Beds
1.5
Baths
1,686 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.34 ac
Lot SizeThe size of the land the home sits on, from county records.
1949
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
5
RoomsThe total room count in county records. Counties differ on which rooms they count, so compare it loosely.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$361K
$346K low$376K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$345,000 · Jun 12, 2025

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$6,607 (2023)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$30,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$9,389
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$20,611
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$30,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$300,000

Climate Risk

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.41
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
20
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
72
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
74
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
40
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Bungalow
CountyCOOK
Lot (acres)The size of the land the home sits on, from county records.0.34
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
RoofThe main material covering the roof, such as asphalt shingle or tile.Asphalt
HeatingThe type of heating system in the home.Yes
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Detached
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(6)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(3)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

H
Alan B. Shepard High SchoolC-
High · Grades 9–12 · 0.5 mi
E
Chippewa Elementary SchoolA+
Elementary · Grades 1–3 · 0.5 mi
M
Independence Jr High SchoolA
Middle · Grades 6–8 · 0.8 mi

District: Palos Heights School District 128

Neighborhood · ZIP 60463These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.61
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.104
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.50

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.5.5%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.14,154
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,399 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$110,295
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$130,130
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

Owner Tools

Do you own this home?
Claim this home

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

12840 S Mason Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 66% of homes in Palos Heights 60463
  • Has a bigger lot than 78% of homes in Cook County
  • Older than 94% of homes in Palos Heights 60463

What homes are worth in Palos Heights 60463

Each bar is how many homes fall in that price range. The marker is this home.

This home
$241K$704K

This home is worth more than 34% of homes in Palos Heights 60463.

How it measures up in Palos Heights 60463

The dot is this home. The mark in the middle is the typical home in Palos Heights 60463.

Estimated value$360,877
CheaperTypical $395,750Pricier

Pricier than 34% of homes nearby

Price per ft²$214
CheaperTypical $208Pricier

Pricier than 54% of homes nearby

Living area1,686 ft²
SmallerTypical 1,855 ft²Bigger

Bigger than 39% of homes nearby

Lot size0.34 ac
SmallerTypical 0.33 acBigger

Bigger than 57% of homes nearby

Year built1949
OlderTypical 1972Newer

Newer than 6% of homes nearby

How 12840 S Mason Ave ranks against every home in each area.
MeasureThis homePalos Heights 60463Cook County
Estimated valuepricier than$360,87734% of homes55% of homes
Price per ft²pricier than$21454% of homes36% of homes
Living areabigger than1,686 ft²39% of homes60% of homes
Lot sizebigger than0.34 ac57% of homes78% of homes
Year builtnewer than19496% of homes34% of homes

About 12840 S Mason Ave

How much is 12840 S Mason Ave, Palos Heights, IL worth?

The TopHap Estimate for 12840 S Mason Ave, Palos Heights, IL is $360,877 as of Sep 24, 2026. The likely range is $345,665 to $376,089. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 12840 S Mason Ave, Palos Heights, IL last sell?

12840 S Mason Ave, Palos Heights, IL last sold on Jun 12, 2025 for $345,000, according to the county's recorded deed. TopHap holds 3 recorded sales for this parcel.

How big is 12840 S Mason Ave, Palos Heights, IL?

12840 S Mason Ave, Palos Heights, IL has 3 bedrooms, 1.5 bathrooms, 1,686 square feet of living space and a 0.34-acre lot.

When was 12840 S Mason Ave, Palos Heights, IL built?

12840 S Mason Ave, Palos Heights, IL was built in 1949, making it 77 years old. It is a bungalow home. The building has 1 story.

What schools serve 12840 S Mason Ave, Palos Heights, IL?

12840 S Mason Ave, Palos Heights, IL is assigned to Alan B. Shepard High School (high), rated C-; Chippewa Elementary School (elementary), rated A+; Independence Jr High School (middle), rated A. All sit in Palos Heights School District 128. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 12840 S Mason Ave, Palos Heights, IL compare to other homes in Palos Heights 60463?

Among the 5,833 homes in Palos Heights 60463, it is worth more than 34% of them ($360,877 against a typical $395,750), its price per square foot is higher than 54% of them ($214 against a typical $208), it is bigger than 39% of them (1,686 ft² against a typical 1,855 ft²), its lot is bigger than 57% of them (0.34 ac against a typical 0.33 ac) and it is newer than 6% of them (1949 against a typical 1972). Measured against all of Cook County, it is worth more than 55% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 12840 S Mason Ave, Palos Heights, IL?

The 2023 property tax bill for 12840 S Mason Ave, Palos Heights, IL was $6,607. The county assessed it at $30,000.

More homes on S Mason Ave

Closest homes

More homes in Palos Heights 60463

Assigned schools

Explore the area

See this home in context

Open 12840 S Mason Ave on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.

Open in map
A flyover of TopHap's photorealistic 3D map, with recorded sale prices pinned to homes
Search any address, city, zip, or county…3D$1.9M$6.25MOpen in map